Tobacco pipe



June 7, 1949. o. M. lNGEBRETsEN 2,472,159

TOBACCO PIPE Filed Feb. 11, 1947 v 0m if @mism BY j ATTORNEYS.

Patented June 7, l1949 I:NT

This invention -has-general reference' toztobacco f pipes andf relatesnotifie-species" orV4 formi' thlereof'l designed 1 to afford-ia sanita-ry'-smokean Mcireffsp'el cii'lcally, my inventiorrhasforl its's-prirnaryvob'e" ject-'tof provide-anovel'form'pfftobaeco 'pipecon" taining provisions which* positivelyfprevent 1i thepassage'J of nicotine#J or# other`l noxious-1resikitnirnlv from thetobacco lbowl being=- drawn "through 'the mouthpiece or bit into=the' srriokers-moutl`-11fV Another objectl'is.ltofpr-'ovidea` tobacc'opipe" ern bodying a baffle or dam'intermediatetlie#suction pass age-l* from the pipe. bowl and lithe mouthpiece duct; which is -1 sol lecatedf relative-to -a drain# off ors-moisture diverting and icol-lectingpassage; tiri-at"` ittisanormally impossible"=for any nicotineglsaliva, or. other residuum',` developed `irrcidental to'snolifing from entering the mouthpiecedct*andithef smokers mouth A further objectiof this invention Iisfto provide a y.tobacco pipev of fthe speciesf orffrmindicated' embodying provisionswheby normallylfreecom: munic'ationebetweenfi theA pipeV bowl' tpassagei as welll as the lmoisture collecting passageifA and fthe-f mouthpiece 'is main-tained; irrespectiveof Whether* or4 not thepipestemfandlsaid Iri'cfn'rtlipieceled-iy rectly ali'gnedor relatively dis'al-igned:

' With the above stated ob=j ects and :ancillary 'adj-:- vantages in view, my invention essentially corr-` sistseirfr Vcertainnovelfeatures and details of construction, and ,arrangement of..parts, as hereinafter fully disclosed, illustrated "by the accompanying :sheet ,ofxdrawingsx` andgmoreiparticularly recited in the concluding claims.;

In the drawings:

Fig. 1 is a Vertical longitudinal section through a partially-curved, or downwardly-inclined?? stein= styleaof :tobacco pipe,

Fig. 2 is an end elevation of the same as viewed looking from the right-hand towards the left hand of Fig. 1.

Figs, 3-'7 inclusive are cross-sections through the mouthpiece and pipe stem, respectively taken on the planes designated by the angled-arrows III-III, IV-IV, V-V, VI--VI and VII- VII appearing in Fig. 1, and drawn to larger scale for clearer illustration of the details.

Fig. 8 is a sectional View, similar to Fig. 1, i1- lustrating the adaptations of my invention to a straight-stem pipe; and

Fig. 9 is a fragmentary sectional view illustrating the application of my improvements to tobacco pipes having a mouthpiece frictionally connected to the pipe stem.

In describing the forms of my invention shown by the accompanying sheet of drawings specic terms will be employedi for' purposes ofliwclarity;Y but Vit is to be understood that suchLtermsLare usedina Vdescriptive sense andnot for purposesofi liniitation.` Eachspeciclterm is intendeditoiii f clude all f technical equivalents which; serve :in ai similar manner to accompl-ishan analogouspur`= pose;

Referring more ini detail-f. to .the 'drawings' the'` tobacco pipes. illustrated `each comprises the-usuali bowl.. III; stemJI I, andl Aunitary* mouthpiece-12%? The stein I Ifinoludes'. two 'spacedlyianididistictiyef passages or. parallel Vbores I3;` IVthexforrnerl `of..vvl1iclficonnects from the lloowliil utolthe'mouth'. piece;|2, and. thelatter.A lll-fromt-saia mouthpiece`4 to:..the' lower end of-.the-bowlat I5, whereiitlisf lttedwith a'removable screw-plug I6,f.serviceable normallyto'seal or `close inthe outlet endloffsaid bore ,|411 In .accordance with'my invention 'the respective endsiof the bores '.I 3, I 4 where theycon` nectintoa .the mouthpiece I 2:2are viiaringlyshapedjf "that ie-tosaythe enderthe bore lszfislrormeo with eccentrically. related -uppern and. lowerzcurlvilinear tapers II, IVpreferablyofdifferential,` or tlesser. and greater'.v radius -i respectively; ,saidi tapers. meeting onefanotherron a line-'YI diametri-il cally ythrough the axis .of the bore; I3,=..as best understood ,from Fig 5. At this juncture, itisito b-eenoted that the bores. I3, ldiarepreferablyofi' small-eri and greater diameter,- respectivelygandl that the :tapers I'l, I8 -at the Jouteri en fthef bore-'I i are approximately. of Vcorrespending Arad-iii;v

Turning now tothe unitary' mouthpiecewlzg; which inFigs. l and fQisldepicted. `as appliedto the stem of the bent type,.1andiain 'Figgi-txa;

L straight stem pipe. Morespecically referririgito Figs; land .9 it is` kto :be observed` thezmouthpiece lzris'fformed of hardirulobenV or;-'other de'sirablr material, and that it is provided with a small laterally expanded smoke duct I9, preferably as shown having its outer and wider end or slot portion 20 tangentially related to that of the moisture drain olf passage Ill in the stem I I, see Fig. 4 to best advantage. Otherwise expressed, the outer upper edge portion of the smoke-duct slot 20 is aligned with the top curvature of the passage Ili, in order that a small riser 2| intervenes the confronting mouthpiece slotted end portion 20, whereby any moisture from the smokers mouth draining over the sai-d riser portion 2| is prevented from being drawn back into the mouth. In addition the mouthpiece I2 is provided with communicating relatively fork-borings 22, 23 the former 22 whereof is preferably inclined at an angle of approximately thirty degrees in respect to the longitudinal axis of the -passage I4; whereas the latter 23 parallels the corresponding axis of the bore I3, with provision of an intervening inclined dam 24. The bore 23 is provided with a tapering, preferably, segmental-shaped cut-out 25, see Fig. 4 to best advantage, functional to retard the passage of any tobacco residuum being drawn over the dam 24 into the inclined bore 22 as readily appreciable by steady smokers, or those conversant with the art of sanitary pipe making. It will be also clearly understood that the inclined bore 22, when drilled from the outside-in, will have its outer end closed in by a suitable plug or set-screw 26.

In Figs. 1 and 8 I have shown the mouthpiece I2 as attached to the stem II by means of a screw-threaded connection 2'I which normally ensures said mouthpiece and stem `being retained in alignment with unimpeded communication between the respective bores I3, I4 and duct I9. On the other hand when the pipe stem II is reduced at 28, as shown in Fig. 9, for friction engagement in the socket end 29 of the mouthpiece should, or when, said parts become relatively disaligned, it is to be particularly remarked that by providing the upper tapers I1, I8 and confronting undercut 25, as well as the lower tapers I'I, I8 and confronting slot 20, free fiow communication is always maintained between the stem suction or smoke bore I3 and mouthpiece bore 23, as well as between said mouthpiece inclined bore 22 and the drain-off bore I4.

From the foregoing it will be readily understood that the improved pipe of this invention conduces to a perfectly dry smoke, inasmuch as the passage of any nicotine or other residuum from the bowl I by way of the suction bore I3 is rstly checked from entering the mouthpiece bore 23 by the undercut 25, while any accumulation collecting thereat that may be drawn over the top of the inclined dam 24 will creep down the underside of said dam, and be deected by the adjoining curvilinear taper I I into the drainoif passage I4, such action being materially aided by the saliva from the smokers mouth passing down the smoke duct I9, in an obvious manner.

In conclusion, while I have shown and described, with some particularity, preferred embodiments of the invention it will be realized that the details may be changed to adapt the improvements to other forms of smokers pipe than the species illustrated; hence the right is reserved to make such changes, or modifications, as may fairly come within the scope of the subject-matter hereafter claimed.

Having thus described my invention, I claim:

1. In a tobacco pipe comprising a bowl and stem unit having connectable bores in said stem,

one of which serves as the smoke-conduit from' the bowl and the other as a collector-drain-oi passage; the combination of a unitary mouthpiece embodying communicating bores dening an intervening dam, one of said bores leading from the smoke-conduit and the other connecting therefrom into the collector drain-off passage; means jointly dening a trap for residuum drawn from the tobacco bowl at the juncture between the stem and mouthpiece; and means dening a riser between the collector-drain-off passage and the mouthpiece smoke-duct whereby nicotine, saliva and other residuum, accumulating in said drain-01T passage is positively pre- Vented from entering the smokers mouth.

2. A tobacco pipe comprising a bowl and stem unit; spaced longitudinal bores in the stem, one of which serves as the smoke-conduit and the other as a collector-drain-oi passage, and both of said bores have the mouthpiece adjoining ends diverginglyilared; a mouthpiece attached to the stem outer end and embodying angularly-related communicating bores defining an intervening inclined dam, one of said bores leading from the smoke conduit and the other connecting therefrom into the smoke-duct of the mouthpiece; taper means dening a residue trap at the juncture between one of the mouthpiece bores and the stem smoke-conduit; and a riser at the juncture between the other mouthpiece bore and the collector-drain-oi passage.

3. A tobacco pipe in accordance with claim 2 wherein the stem bores are spaced in parallel; wherein the flared ends of said bores are dened by upper and lower eccentrically-related curvilinear tapers of differential radii, for the purpose specied.

4. A tobacco pipe in accordance with claim 2 wherein the mouthpice communicating bores include an angle of approximately thirty-degrees; wherein the bore connecting from the stem smoke-conduit is provided in its lower portion with a segmental-shaped tapering cut-out; and wherein the mouthpiece smoke-duct outer end is laterally expanded to dene a segmental riser in confronting relation to the opposing iared end gfdthe drain-off passage, for the purpose speci- OLAF M. INGEBRETSEN.

REFERENCES CITED The following references are file of this patent:

FOREIGN PATENTS of record in the Number 

